unrecognizable insn in arm-linux-gnueabihf-gcc

[Christopher Covington]

We encounter the following error in 436.cactusADM from SPEC2006 with the 2013.05 32-bit toolchain when NEON is used. The error message is similar to that of bug #1163942.

gcc-4.8.1-linaro13.05/bin/arm-linux-gnueabihf-gcc -c -o lin48BLD2013-05_neon/PUGHSlab/Mapping.o -DSPEC_CPU -DNDEBUG -Iinclude -I../include -DCCODE -mfpu=neon -O3 PUGHSlab/Mapping.c
PUGHSlab/Mapping.c: In function ‘Hyperslab_DefineGlobalMappingByIndex’:
PUGHSlab/Mapping.c:499:1: error: unrecognizable insn:
 }
 ^
(insn 933 932 934 113 (set (reg:V4SI 1027)
        (unspec:V4SI [
                (const_vector:V4SI [
                        (const_int 0 [0])
                        (const_int 0 [0])
                        (const_int 0 [0])
                        (const_int 0 [0])
                    ])
                (reg:V4SI 1023 [ vect_var_.49 ])
                (const_int 1 [0x1])
            ] UNSPEC_VCGE)) PUGHSlab/Mapping.c:567 -1
     (nil))
PUGHSlab/Mapping.c:499:1: internal compiler error: in extract_insn, at recog.c:2150

[Zhenqiang Chen (zhenqiang-chen)]

Thank you for the bug report. I had confirmed it with 2013.05.

The root cause is similar to that of bug #1163942. I will create a patch to fix it.